And here's one of the constant problems with discussing balance in AoW:
Different playstyles. A game against nominally equal opponents that is assumed to last no longer than 25-30 turns, soft-requires you to have three stacks before turn 20 and T3s only happen due to a dedicated focus is very different than a game against AIs with massive resource bonuses that lasts 100 turns, has due to map size less military demand on the early economy but requires planning for the inevitable waves of enemies and where you will eventually get T3s and 4s simply to manage the attrition.
And that's before we discuss autocombat.
And PBEM is another complication in that it reverses when autocombat is usually used and can be made for either setup.
Different playstyles. A game against nominally equal opponents that is assumed to last no longer than 25-30 turns, soft-requires you to have three stacks before turn 20 and T3s only happen due to a dedicated focus is very different than a game against AIs with massive resource bonuses that lasts 100 turns, has due to map size less military demand on the early economy but requires planning for the inevitable waves of enemies and where you will eventually get T3s and 4s simply to manage the attrition.
And that's before we discuss autocombat.
And PBEM is another complication in that it reverses when autocombat is usually used and can be made for either setup.